How reliable are these tests? I just did the same test on our MX records and we're not having any issues what so ever. This means that the 207.61.92.122 domain does not exist! No mail can be sent to it. -----Original Message----- From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] Sent: Tuesday, November 25, 2003 11:51 AM To: [ExchangeList] Subject: [exchangelist] RE: smtp;550 5.7.1 Unable to relay for http://www.MSExchange.org/ You do have some DNS problems with your MX record: http://www.dnsreport.com/tools/dnsreport.ch?domain=mixtecinc.com http://www.dnsreport.com/tools/mail.ch?domain=mixtecinc.com John Tolmachoff Engineer/Consultant/Owner eServices For You ---------